The change of the camera position (Assassin's Creed: Odyssey)

Dear experts tell me the way to change the camera position, I want to configure it slightly to the right above and below the character is in the left corner of the screen, to provide comparison screenshots, I want to make the camera constant just like aim but without sight... well, I think I understand, make it easier to understand, want to make a third person view like in Skyrim or GTA5